cocos2dx 对全部动作或单个动作速度的改变

一、对全部CCActionInterval动作进行加速或减速,这个很简单只要一句代码就可以。

[cpp] view plain copy

1. CCDirector::sharedDirector()->getScheduler()->setTimeScale(2);//以目前2倍速度播放
2. CCDirector::sharedDirector()->getScheduler()->setTimeScale(0.5);//以目前0.5倍速度播放

二、对个别单个动作进行加速或减速

有两种方法

1.通过CCSpeed实现

[cpp] view plain copy

1. CCSprite*sprite=CCSprite::create();
2. CCActionInterval*jump=CCJumpBy::create(4,ccp(0,0),100,4);
3. sprite->runAction(CCSpeed::create(jump,2));//以2倍速度播放动作

2.通过CCActionManager实现，着重讲这个方法

[cpp] view plain copy

1. CCScheduler*scheduler1;
2. voidHelloWorld::myInit11()
3. {
4. CCSizesize=CCDirector::sharedDirector()->getWinSize();
6. CCControlSlider*slider1=CCControlSlider::create("sliderTrack.png","sliderProgress.png","sliderThumb.png");
7. slider1->setPosition(ccp(size.width/4*2,size.height*0.3));
8. this->addChild(slider1);
9. slider1->setTag(1);
10. //最小值
11. slider1->setMinimumValue(0);
12. //最大值
13. slider1->setMaximumValue(5);
14. //回调函数
15. slider1->addTargetWithActionForControlEvents(this,cccontrol_selector(HelloWorld::sliderAction),CCControlEventValueChanged);
18. //Createanewscheduler,andlinkittothemainscheduler
19. scheduler1=newCCScheduler();
20. CCDirector::sharedDirector()->getScheduler()->scheduleUpdateForTarget(scheduler1,false);
22. //CreateanewActionManager,andlinkittothenewscheudler
23. CCActionManager*actionManager1=newCCActionManager();
24. scheduler1->scheduleUpdateForTarget(actionManager1,false);
27. //左边精灵
28. CCActionInterval*jump1=CCJumpBy::create(4,4);
29. CCActionInterval*jump2=jump1->reverse();
30. CCSequence*seq=CCSequence::create(jump2,jump1,NULL);
31. CCRepeatForever*action=CCRepeatForever::create(seq);
33. CCSprite*left=CCSprite::create("Icon.png");
34. left->setPosition(ccp(size.width/4*1,size.height*0.5));
35. this->addChild(left);
36. //IMPORTANT:SettheactionManagerrunninganyaction
37. left->setActionManager(actionManager1);
38. left->runAction(action);
41. //中间精灵
42. CCSprite*middle=CCSprite::create("Icon.png");
43. middle->setPosition(ccp(size.width/4*2,size.height*0.5));
44. this->addChild(middle);
45. middle->setActionManager(actionManager1);
46. middle->runAction(CCRepeatForever::create(CCRotateBy::create(2,360)));
49. //右边精灵
50. CCSprite*right=CCSprite::create("Icon.png");
51. right->setPosition(ccp(size.width/4*3,size.height*0.5));
52. this->addChild(right);
53. CCActionInterval*scale1=CCScaleBy::create(1,2);
54. CCActionInterval*scale2=scale1->reverse();
55. CCSequence*seq2=CCSequence::create(scale1,scale2,NULL);
56. CCRepeatForever*action2=CCRepeatForever::create(seq2);
57. right->setActionManager(actionManager1);
58. right->runAction(action2);
59. }
61. voidHelloWorld::sliderAction(CCObject*pSender,CCControlEventcontrolEvent)
62. {
63. CCControlSlider*pSliderCtl=(CCControlSlider*)pSender;
64. floatvalue=pSliderCtl->getValue();
66. scheduler1->setTimeScale(value);
67. }
69. HelloWorld::~HelloWorld()
70. {
71. scheduler1->release();
72. }